DD220388A1 - SPLIT WIDTH MEASURING BAR FOR STACKED CERAMIC SHAFT - Google Patents

Abstract

SPLIT WIDTH MEASURING BAR FOR STACKED CERAMIC SHAFT. THE INVENTION CONCERNS A DEVICE FOR DETERMINING VALUES FOR ASSESSING THE LAYING OF CERAMIC DRUGS AS ELEMENTS FOR FLOOD WATER REGULATION. THE APPLICATION IS ESPECIALLY IN FARMING IN THE CONSTRUCTION OF FACILITIES FOR REGULATING THE FLOOD WATER CONTENT, BUT IS ALSO POSSIBLE IN OTHER AREAS WHERE CERAMIC DRAENROHES ARE LAY DOWN. THE OBJECTIVE OF THE INVENTION IS THE DEVELOPMENT OF A SIMPLE TO HAND-HELD MEASURING APPARATUS THAT ALLOWS THE ALLOCATION OF THE DETERMINED SPLIT WIDES INTO A BETWEEN AREA ACCORDING TO THE DEMANDS OF THE STANDARDS. THE TASK WAS ESTABLISHED THROUGH THE DEVELOPMENT OF A LONG MEASURING STATE, RECTANGULAR CROSS SECTION, OF WHICH THREE SIDES ARE SMOOTH AND STRAIGHT AND ARE ON THE FOURTH SIDE MEASUREMENT LEVELS. THE STEEL MEETS ABSOLUTE AMOUNTS IN MILLIMETERS. THE AVAILABLE NUMBERS ARE DIVIDED INTO TWO-NUMBER GROUPS, SO THAT ONLY TWO MEASUREMENTS ARE REQUIRED FOR EACH NUMBER-GROUPS GROUP. THE LEVEL OF MEASURING STAGES MEETS THE TOTAL OF WALLSTUFFS OF THE LARGEST NOMINAL RANGE IN PLUS MORE THICKNESS, SO THAT THE ACTUAL WALLSTUFFS OF THE PIPES ARE ALWAYS GATHERED. THE LENGTH OF THE MEASURING STAGE MEETS THE SMALLEST NOMINAL WALL PLUS WANDSTAERKE PLUS ALLOWABLE MORE THICKNESS OF THE NOMINAL GROUPS IN QUESTION. MATERIALS SHOULD PREFERABLY BE CORROSIONED. CORROSION-RESISTANT METALS OF KNOWN COMPOSITIONS TO BE USED.

Description

Field of application of the invention

The invention relates to a device for determining the joint or gap width of laid ceramic drainage pipes. The measurement of the joint and gap width or the free distance between ceramic drainage pipes, which have been laid by hand or by machine in the ground for Bodenwasserregelierung, is of importance for the assessment of the achieved quality of the installation, the expected effectiveness and expected sludge the invading soil in the absence of protection from it. The invention is applicable to the manufacturers of Bodenwasserregulierungsanlagen in which ceramic drainage pipes are laid as drainage elements in the ground. The invention is also applicable in the determination of joint widths in masonry, which was made of bricks, natural rock or other building materials.

Characteristic of the known technical solutions.

Ceramic drainage pipes are known to be laid in the ground to regulate the content of the soil water. In government standards or other regulations, the maximum allowable size of the gap, the joint width between two ceramic tubes is set. In order to be able to measure this width (this gap), individually manufactured measuring instruments or measuring methods considered as correct are used. Technical solutions are known only for the measurement of extremely small gap widths. Gauges (so-called spies) from mechanical engineering are used. ,

Inventions in the form of calipers, touch probes, micrometer screws and bore gauges, according to various principles, in particular mechanical working, are unsuitable for the intended purpose of the measurement, they do not meet the metrological requirements. These measuring devices are also not suitable for outdoor use under the influence of moisture. -

To assess the invention, the patents filed in the GDR and in the FRG of the order units G 01 B 3 and 5 were sighted.

For the measurement of gap or joint widths in laid ceramic drainage pipes specifically, no patents are deposited on suitable measuring means.

Object of the invention

The aim of the invention is the development of a simple measuring means for determining the gap width / the joint spacing / the free distance between buried in the soil ceramic drainage pipes. The use of individually manufactured measuring instruments and individually considered as correct measuring methods should thus be put to an end. The use of a uniform measuring means should also contribute to a better comparability of the measurement results. , , , '

Explanation of the essence of the invention

The object is achieved by a device with which the existing gap width between two ceramic drainage pipes can be determined in a simple measurement procedure. .

According to the invention this is possible with the measuring device, which consists of an elongated metal rod of rectangular cross-section, in which three sides are smooth and rectilinear and the fourth side has step-like steps. The smallest gap width corresponds to the smallest »step. The degree of stuf ung can be chosen arbitrarily. One step by one millimeter is to be preferred.

In principle, when determining the gap width it can be assumed that the entire wall thickness of the ceramic tube is detected, since it may happen that the end faces of the tubes were not laid parallel to each other, but due to the possible diagonal cut and a possible curvature of the tube, which manufacturing technology is limited, inner and outer diameter of the tubes are wedge-shaped to each other. Decisive for the existing, and effective gap width is not the largest, but the smallest distance, since this is decisive for the size of the grain, which can penetrate into the tube. Therefore, it must be noted that the length of a measuring stage depends on the wall thickness of the ceramic drainage pipe, taking into account the deviation permitted by the standards (extra thickness). The wall thickness of the ceramic drainage pipes also increases with increasing nominal width.

For reasons of material economy, the currently available nominal diameters have been divided into two nominal diameter groups. This reduces the number of required measuring rods to two

 Nominal widths of nominal diameter 1 in nominal width -

-2- 258161 4

For each nominal diameter group, two dipsticks are necessary, as the number of measuring steps per rod depends on the sum of the nominal diameter plus twice the wall thickness plus twice the permissible multiple thickness.

Technical data of the gap width measuring rods: ^y

fornomewhere up to80mm: -representation on fig. 1 -

Length per measuring stage 14 mm

Measuring stages per dipstick 5

Number of measuring rods 2

Length of a measuring stick 100mm *

Width of the measuring rods 8bis12mm

selected gradations 1.5; 2; 3; 4; 5; 6; 7; 8th; 9

for nominal diameters greater than 100mm: - Illustration on Fig. 2- "

Length per measuring stage 24 mm

Measuring steps per dipstick. '. · 5 >

Number of measuring rods 2

Length of a measuring rod 140 mm

Width of the measuring rods 8 to 12 mm

 selected increments as for nominal sizes bjs 80 mm.

Material: corrosion-resistant or corrosion-resistant metals of known compositions or metals of conventional type

with applied metallic corrosion protection layers. .

embodiment

The invention will be explained below by way of example:

Measuring rods for nominal widths up to 80mm:

maximum permissible bar length - maximum nominal width 80mm plus twice wall thickness of 12 mm plus twice permissible

Thickness of 2mm equals 108mm. , '

possible / permissible number of measuring stages - length of a measuring stage equal to wall thickness per 12 mm plus permissible added intensity

of 2 mm equal to 14mm.

Bar length divided by length of a measuring level equal to 7.

Due to manufacturing and measuring technology, a holder on the dipstick is necessary, therefore, the number of measurement stages per dipstick is set to 5.

Smallest step / gap: 1.5mm, then 2mm and each additional step 1mm increasing. ι

Carrying out the measurement: The gap widths are determined on an uncovered or unfilled pipe string from installed ceramic drainage pipes by inserting the measuring rod between the ends of the pipes into the pipe interior, the smooth side of the measuring rod lying opposite the measuring stages sliding along the one pipe wall until the dipstick gets stuck in the gap. The gap width can be read, since the absolute size is engraved in mm on each measuring stage.

Claims (5)

1. A method for determining values to control the quality of laying ceramic drainage pipes and their expected effectiveness for regulating the soil water content by using a Fugenweiten measuring rod, characterized in that the width of the joining / the free distance between the pipe ends by a measuring device is obtained, which is introduced according to the invention in this' gap, wherein the back of the rod is guided along the one pipe end and on the rod, the width can be read. -1- 258161 4 Invention claims: 2. A method for testing the quality of the laying of ceramic drainage pipes, characterized in that for all according to government standards currently available nominal diameters ^ which are divided into two nominal diameter groups, only two dipsticks are required for each nominal diameter group to perform the required measurements. (3. Measuring device for determining the gap width / the free distance between installed ceramic drainage pipes according to the invention consisting of an elongated rod, rectangular cross section, made of metals of known composition, preferably corrosion resistant or corrosion resistant, of which three sides are smooth and straight, with on the fourth side arranged measuring stages of the same length, starting with a smallest gap width. 4. Measuring device according to item 3, characterized in that the absolute amount of the gap width can be read directly on each measuring stage, so that the classification of the gap width in a from-to area is possible. 5. Measuring device according to item 1, 2 and 3, characterized in that the length of the measuring stages in each case the sum of wall thickness of the nominal diameter plus the permissible excess thickness for this corresponds and thus the cross section of the actual possible wall thickness of the relevant ceramic drainage pipe is always observed.